Decline depth
—
Not currently in the rolling-252-day ≥20% decline universe.
Watch
ARDXArdelyx, Inc.
5.8σ
decline sigma — volatility-normalized move (typical daily 2.24%)
Current
$3.58
Decline depth
—
Decline σ
5.8σ
TFC
3/5 bearish
Rolling 252-day high
Up day
Down day
Last 90 trading days · data from Alpaca
Since tracking began
$ARDX has been tracked since 2026-03-01. It was down 23.0% from its 52-week high then — now $3.58.
That's 34.4 percentage points deeper than the day it joined.
From the 52-week high as of 2026-03-02 to today. Split-adjusted. Observed, not a forecast.
Structural break signals
ARDX qualifies for the Watch on decline sigma.
Time-frame continuity
3/5 bearish
Latest bar on five time frames, daily to yearly. Bearish = 2-Down or red 3.
Past the 3/5 Watch threshold.
Decline sigma
5.8σ
Drop over the last 20 bars in units of daily volatility (2.24%/day).
Past the ≥4σ Watch threshold.
The structural read
What price action says about ARDX.
ARDX qualifies for the Watch on decline sigma — the recent drop measures 5.8σ over a 20-bar window. Sigma scales the move by the stock's own typical daily volatility, so a small percentage drop in a normally-quiet name can land here when the bigger players miss it on a pure-percent threshold.
Cross-confirmation: also showing 3/5 bearish time frames.
Questions about ARDX
What people ask.
Why is ARDX on Broken Stocks?
ARDX qualifies for the Watch on decline sigma. The recent drop measures 5.8σ over a 20-bar window — large enough that even a small percentage drop is structurally significant given the stock's typical day-to-day volatility (2.24%).
Is ARDX a falling knife?
ARDX is on Broken Stocks for time-frame continuity or decline-sigma reasons rather than headline depth, so the falling-knife label doesn't cleanly apply. The phrase usually requires a meaningful percentage drop from a fresh high. See the structural break signals above for the axis that actually triggered the listing.
Is ARDX a buy?
Broken Stocks does not issue buy or sell recommendations. The list is a rules-based technical warning system. It tracks structural decline depth and recency — not company quality, management, fundamentals, or news. Always do your own research and consult a licensed advisor.
Where is ARDX trading inside its 52-week range?
At $3.58, ARDX sits 0.7% of the way from its 52-week low ($3.56) to its 52-week high ($6.47). A reading below 25% indicates price is hugging the bottom of the range; above 75%, the top.